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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Media Session: notify the UI process when media controls are enabled/disabled"
   href="https://bugs.webkit.org/show_bug.cgi?id=147802#c5">Comment # 5</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Media Session: notify the UI process when media controls are enabled/disabled"
   href="https://bugs.webkit.org/show_bug.cgi?id=147802">bug 147802</a>
              from <span class="vcard"><a class="email" href="mailto:simon.fraser&#64;apple.com" title="Simon Fraser (smfr) &lt;simon.fraser&#64;apple.com&gt;"> <span class="fn">Simon Fraser (smfr)</span></a>
</span></b>
        <pre>Comment on <span class=""><a href="attachment.cgi?id=258643&amp;action=diff" name="attach_258643" title="Patch">attachment 258643</a> <a href="attachment.cgi?id=258643&amp;action=edit" title="Patch">[details]</a></span>
Patch

View in context: <a href="https://bugs.webkit.org/attachment.cgi?id=258643&amp;action=review">https://bugs.webkit.org/attachment.cgi?id=258643&amp;action=review</a>

<span class="quote">&gt; Source/WebCore/Modules/mediasession/MediaRemoteControls.cpp:50
&gt; +    if (m_session)
&gt; +        m_session-&gt;controlIsEnabledDidChange();</span >

But maybe m_previousTrackEnabled didn't change?

<span class="quote">&gt; Source/WebKit2/UIProcess/WebPageProxy.cpp:5947
&gt; +    focusManager-&gt;playbackAttributeDidChange(this, sourceElementID, IsPlaying, state &amp; MediaProducer::IsSourceElementPlaying);
&gt; +    focusManager-&gt;playbackAttributeDidChange(this, sourceElementID, IsPreviousTrackControlEnabled, state &amp; MediaProducer::IsPreviousTrackControlEnabled);
&gt; +    focusManager-&gt;playbackAttributeDidChange(this, sourceElementID, IsNextTrackControlEnabled, state &amp; MediaProducer::IsNextTrackControlEnabled);</span >

Seems a bit weird to do it like this. Why not just pass  state and let focusManger figure things out?</pre>
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